ImageOptim For Mac

Image files usually include metadata that unnecessarily increases the file size, hence require more disk space and usually take longer to load. ImageOptim is a small Mac app designed to optimize images that come in certain file formats (JPEG, PNG, or GIF).

The ImageOptim user interface is represented by a simple window on top of which you must drag and drop the files you want to process. You can also drop the images on top of the ImageOptim Dock icon.

ImageOptim automatically processes the items you added and then allows you to see them in a Finder window. Next to each file your will be able to see its size (after the optimization), and how much space has been saved.

Via the ImageOptim Tools menu, you can choose the optimization tools you want to employ to process your images: Zopfli, PNGOUT, OptiPNG, AdvPNG, PNGCrush, JPEGOptim, Jpegtran, Jpegrescan, or Gifsicle.

However, if you are not satisfied with the result, select the files you want to recover and the use the “Revert to Original” option from the File menu. Noteworthy is that ImageOptim optimizes the original files, but does not remember the processed elements between sessions: you must apply the revert function before closing the app.

Within the ImageOptim Preferences window, you can choose which optimization tools are to be enabled, and quickly adjust their power by using simple slider bars. Moreover, you can decide if ImageOptim should remove the metadata for the PNG and JPG files, or the file permissions and attributes.